Easy-glide platform allows center unit to slide smoothly and easily. Heavy-gauge steel. Four dividers are welded to the shelf and back for extra strength. Choice of 5 colors. 117W x 36D x 73-3/4"H. Individual tiers come assembled; some assembly is required to stack and connect tiers together using drive rivets. After you place your order, an Office Furniture Specialist will contact you to finalize your order. Or call us now at 877-568-5827 ext. 7819.